Manos challenge (#26)

CHANGELOG.md

@@ -1,21 +1,22 @@
 # Yet unannounced in Chess Simp Discord
 
-* May 5, 2024: New challenge: Chess Simp — "This Is Why Chess Pieces Can Fly"
+* May 7, 2024: New challenge: Chess Simp Discord (manossef) -- "The Gay Challenge"
 
 # Already announced
 
-* Sep 12, 2023: New challenge: Chess Simp — "The Unending Cycle of Revenge"
+* May 5, 2024: New challenge: Chess Simp -- "This Is Why Chess Pieces Can Fly"
+* Sep 12, 2023: New challenge: Chess Simp -- "The Unending Cycle of Revenge"
 * Sep 12, 2023: Internal: keeping track of piece identity
-* Sep 11, 2023: New challenge: Chess Simp — "Odd Numbered Rank"
-* Aug 29, 2023: New challenge: Chess Simp Discord — "Alphabetical"
-* Aug 26, 2023: New challenge: Chess Simp — "Alternate Between Moving Pawns & Pieces"
-* Aug 20, 2023: New challenge: Chess Simp — "That Was Frustrating"
-* Aug 19, 2023: New challenge: Chess Simp — "If A King Moves, The Video Ends"
-* Aug 19, 2023: New challenge: Chess Simp — "This Is A Bit Too Aggressive"
+* Sep 11, 2023: New challenge: Chess Simp -- "Odd Numbered Rank"
+* Aug 29, 2023: New challenge: Chess Simp Discord -- "Alphabetical"
+* Aug 26, 2023: New challenge: Chess Simp -- "Alternate Between Moving Pawns & Pieces"
+* Aug 20, 2023: New challenge: Chess Simp -- "That Was Frustrating"
+* Aug 19, 2023: New challenge: Chess Simp -- "If A King Moves, The Video Ends"
+* Aug 19, 2023: New challenge: Chess Simp -- "This Is A Bit Too Aggressive"
 * Aug 19, 2023: Internal: challenge method to signal that the challenge is explicitly lost
 * Aug 18, 2023: "Open leaderboard" palette command
-* Aug 17, 2023: New challenge: Chess Simp — "A Check Will Ruin Everything"
-* Aug 17, 2023: New challenge: Chess Simp — "Poor Pawn Got Blundered 10 Times"
-* Aug 17, 2023: New challenge: Chess Simp — "Chess, But I'm A Real Simp"
+* Aug 17, 2023: New challenge: Chess Simp -- "A Check Will Ruin Everything"
+* Aug 17, 2023: New challenge: Chess Simp -- "Poor Pawn Got Blundered 10 Times"
+* Aug 17, 2023: New challenge: Chess Simp -- "Chess, But I'm A Real Simp"
 
-# Aug 17, 2023 — started the changelog
+# Aug 17, 2023 -- started the changelog

golden-games/144d5348-37fb-41ff-9291-c2614243fd9b/depth-1.txt

@@ -0,0 +1,43 @@
+1. d4 +0.02
+... Nc6 -0.18
+2. Kd2 +0.02
+... Nxd4 -1.00
+3. Ke3 -1.00
+... Nxe2 -2.00
+4. Ke4 -2.00
+... Nxg1 -5.00
+5. Ke5 -5.00
+... Nh6 -5.20
+6. Bxh6 -1.80
+... gxh6 -5.01
+7. Rxg1 -1.81
+... Bg7 -2.01
+8. Kd5 -2.01
+... Bxb2 -3.01
+9. Nc3 -2.81
+... Bxa1 -7.81
+10. Ke5 -7.81
+... Bxc3 -11.01
+11. Qd4 -10.81
+... Bxd4 -20.01
+12. Kd5 -20.01
+... Bxf2 -21.01
+13. Ke5 -21.01
+... Bxg1 -26.01
+14. Be2 -25.81
+... Bxh2 -26.81
+15. g3 -26.80
+... Bxg3 -27.81
+16. Kd5 -27.81
+... a5 -27.83
+17. a4 -27.81
+... Ra7 -28.01
+18. c4 -27.99
+... b5 -28.01
+19. axb5 -26.98
+... Bb7 -27.18
+20. Kc5 -27.18
+... d5 -27.20
+21. cxd5 -26.17
+... Qxd5 -27.40
+0-1

golden-games/144d5348-37fb-41ff-9291-c2614243fd9b/depth-2.txt

@@ -0,0 +1,15 @@
+1. d4 -0.18
+... Nc6 +0.02
+2. Kd2 -1.00
+... Nxd4 -0.80
+3. Ke3 -2.00
+... Nf5 -1.00
+4. Ke4 -1.20
+... e6 +0.19
+5. Ke5 -1.21
+... Qf6 -1.21
+6. Ke4 -2.21
+... Qh4 -1.01
+7. Ke5 -2.21
+... f6 #-1
+0-1

golden-games/144d5348-37fb-41ff-9291-c2614243fd9b/depth-3.txt

@@ -0,0 +1,11 @@
+1. d4 +0.02
+... Nc6 -0.37
+2. Kd2 -0.80
+... Nxd4 -1.80
+3. Ke3 -1.00
+... c5 -1.82
+4. Ke4 -1.22
+... Nf6 -2.22
+5. Ke5 #-1
+... Qc7 #-1
+0-1

golden-games/144d5348-37fb-41ff-9291-c2614243fd9b/depth-4.txt

@@ -0,0 +1,75 @@
+1. f4 -0.18
+... Nc6 +0.02
+2. Kf2 -0.78
+... Nh6 +0.02
+3. Ke3 -1.18
+... e6 -0.17
+4. Ke4 -1.21
+... d5 -0.21
+5. Ke3 -1.41
+... Bc5 -0.39
+6. d4 -4.41
+... Nxd4 -1.39
+7. c4 -6.39
+... Nc2 -5.17
+8. Kf3 -6.39
+... Nxa1 -5.17
+9. cxd5 -6.59
+... Qxd5 -6.20
+10. Qxd5 -7.40
+... exd5 -6.39
+11. f5 -7.44
+... Bxf5 -7.23
+12. Kf4 -11.42
+... Bxb1 -10.22
+13. Ke5 -12.61
+... Bxa2 -11.21
+14. Bxh6 -11.44
+... gxh6 -11.41
+15. Kf6 -14.43
+... Bd4 -12.23
+16. Kf5 -14.41
+... Bxb2 -12.41
+17. e4 -12.61
+... dxe4 -12.41
+18. Be2 -13.41
+... e3 -13.05
+19. Nf3 -13.25
+... Ke7 -13.23
+20. h4 -14.23
+... a5 -13.05
+21. h5 -14.24
+... Ra7 -13.24
+22. Rh4 -14.24
+... Bd5 -13.23
+23. Nh2 -14.44
+... Rg8 -13.40
+24. g3 -14.46
+... Bf6 -13.43
+25. Ra4 -14.46
+... Bc6 -13.43
+26. Rc4 -14.46
+... Rg7 -13.42
+27. g4 -14.45
+... a4 -13.43
+28. Bd3 -14.46
+... a3 -13.44
+29. Be2 -14.47
+... a2 -13.45
+30. g5 -15.50
+... hxg5 -14.47
+31. Rxc6 -16.49
+... bxc6 -16.48
+32. h6 -19.42
+... Ra5 -16.48
+33. Bb5 -19.69
+... Rxb5 -19.68
+34. Ke4 -22.63
+... e2 -19.69
+35. hxg7 -23.68
+... e1=Q -23.68
+36. Kd3 -25.83
+... Rc5 #-2
+37. g8=Q #-1
+... Rc3 #-1
+0-1

src/challenges/chess-simp-discord.ts

@@ -1,6 +1,6 @@
 import { Board } from '@/board'
-import { getCapture, getMoveCoords, getMovePiece } from '@/move'
-import { legalMovesForPiece_slow } from '@/move/legal'
+import { Move, getCapture, getMoveCoords, getMovePiece } from '@/move'
+import { legalMovesForPiece_slow, legalMoves_slow } from '@/move/legal'
 import { Color, isBlackPiece, isPawn, isWhitePiece } from '@/piece'
 import { Coord } from '@/utils/coord'
 import { Uuid } from '@/utils/uuid'
@@ -238,6 +238,57 @@ class SimpDiscord_UnendingCycleOfRevenge implements Challenge {
   }
 }
 
+class SimpDiscord_Manos implements Challenge {
+  meta: Challenge['meta'] = {
+    uuid: '144d5348-37fb-41ff-9291-c2614243fd9b',
+    title: '[manossef] The Gay Challenge',
+    link: 'https://discord.com/channels/866701779155419206/1236461054255566848/1237450553374539908',
+    challenge: `Approach him! Choose whatever move brings your king the closest (or at least the least far) to the opponent's king. Oh, and your first move has to let your king out.`,
+    records: new Map([]),
+  }
+
+  isMoveAllowed: Challenge['isMoveAllowed'] = ({ move, board, history }) => {
+    // First move is special
+    if (history.length === 0) {
+      // Just has to be one of the three pawn moves
+      return move.kind === 'normal' && ['d2', 'e2', 'f2'].includes(move.from.toAlgebraic())
+    }
+
+    // Otherwise: "Whatever is the smallest possible distance to have after all moves, this has to be the new distance".
+
+    // Distance between the kings after the proposed move. NB: the proposed move is not necessarily a king move!
+    const distanceAfter = (() => {
+      const boardAfterMove = board.clone()
+      boardAfterMove.executeMove(move)
+      return boardAfterMove.kings.white.pythagoreanDistance(board.kings.black)
+    })()
+
+    // Best achievable distance
+    const bestPossibleDistance = _.min(
+      legalMoves_slow(board).map((move) => {
+        const boardAfterMove = board.clone()
+        boardAfterMove.executeMove(move)
+        return boardAfterMove.kings.white.pythagoreanDistance(board.kings.black)
+      })
+    )
+
+    // ...and they have to match
+    return distanceAfter === bestPossibleDistance
+  }
+
+  highlightSquares: Challenge['highlightSquares'] = ({ board, history }) => {
+    // On the first move, highlight the three movable pawns to prevent confusion
+    if (history.length === 0) {
+      return ['d2', 'e2', 'f2'].map((algebraic) => ({
+        coord: Coord.fromAlgebraic(algebraic),
+        color: 'blue',
+      }))
+    } else {
+      return []
+    }
+  }
+}
+
 /**
  * Challenges from the #video-suggestion channel on the Chess Simp Discord: https://discord.com/channels/866701779155419206/884667730891010048
  */
@@ -252,6 +303,7 @@ export const chessSimpDiscordChallenges: Map<
     () => new SimpDiscord_Vampires(),
     () => new SimpDiscord_Alphabetical(),
     () => new SimpDiscord_UnendingCycleOfRevenge(),
+    () => new SimpDiscord_Manos(),
   ].map((challengeFn) => [
     challengeFn().meta.uuid,
     { meta: challengeFn().meta, create: challengeFn },

src/utils/coord.ts

@@ -29,7 +29,7 @@ export class Coord {
     return this.x === other.x && this.y === other.y
   }
 
-  /** Convert to algebraic notation. */
+  /** Convert to algebraic notation. Uses lowercase */
   toAlgebraic(): string {
     return String.fromCharCode('a'.charCodeAt(0) + this.x) + (this.y + 1)
   }